Remove camera from NVR

Richard

Is there a way to remove a camera from an nvr?

I have 4x nvr's deployed in a location (3x 8ch, 1x 16ch), recording 35 cameras.
One of the camera's is connected to the network instead of the nvr directly (just due to location, a direct connection was not a possibility)

This has worked well for quite a long time (>2 years), as the camera was adopted by one of the nvr's and allowed recording from the system.
Yesterday I replaced a failed rln8-410 (after approx 4 years of service), and immediately all of the cameras that were attached to to it were recognized and setup again, BUT

That one floating camera is now being seen by three of the NVR's, and two of the three seem to be fighting for control (my email is filled with the two systems alternately complaining about video loss for that camera for the last 16 hours).

I've managed to disable the alarm emails for those channels (a process that is extremely unintuitive if the channel is offline, requires using the copy-to function from a working camera channel).
I don't have a lot of faith that it won't randomly stop recording on the intended nvr (due to conflict with the other two units vying for control), so it would be better to not have the camera not show multiple times in the first place. This will surely also confuse the couple of users on the systems if they see the camera in multiple fields.